Incidental Finding of Post-Transplant Erythrocytosis After Renal Transplantation in a Patient With Chronic Kidney Disease: A Case Report.

Renal transplant aims to provide a healthy substitute for the chronically damaged kidney while also correcting the anemia of chronic disease by producing erythropoietin for effective erythropoiesis. However, in a small number of renal transplant patients, the hematocrit continues to rise even after correction of the anemia, ultimately leading to abnormally increased hemoglobin and hematocrit. This condition is termed "post-transplant erythrocytosis" (PTE). We present a case of a 50-year-old male who was diabetic, positive for hepatitis B surface antigen, and negative for polymerase chain reaction. He presented with symptoms of acute hepatitis. During the work-up, PTE was diagnosed. Our case sheds light on a common complication of renal transplant known as PTE, its possible complications in the patient, and the necessary interventions to prevent untoward outcomes. PTE, although a less common complication of renal transplant, can become serious and potentially fatal due to its sequelae of thromboembolism. The complications can range from simple thrombophlebitis and thrombosis of digital and brachial arteries to more severe events such as pulmonary embolism or stroke and cardiovascular events. Regular post-transplant follow-ups with frequent bloodwork will aid in the early diagnosis of PTE, allowing for timely intervention with appropriate treatment options such as venesection or angiotensin receptor blockers (ARBs)/angiotensin-converting enzyme (ACE) inhibitors.